21021518

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 37196544

約数和(自身を除く): 16175026

約数列:

[1, 2, 7, 14, 67, 73, 134, 146, 307, 469, 511, 614, 938, 1022, 2149, 4298, 4891, 9782, 20569, 22411, 34237, 41138, 44822, 68474, 143983, 156877, 287966, 313754, 1501537, 3003074, 10510759, 21021518]

約数ペア:

[(1, 21021518), (2, 10510759), (7, 3003074), (14, 1501537), (67, 313754), (73, 287966), (134, 156877), (146, 143983), (307, 68474), (469, 44822), (511, 41138), (614, 34237), (938, 22411), (1022, 20569), (2149, 9782), (4298, 4891)]